CVE-2026-63890: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-9x5h-mxx6-q576
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Advisory Summary

CVE-2026-63890 is a security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-63890 at a Glance

CVE Identifier CVE-2026-63890
GHSA Identifier GHSA-9x5h-mxx6-q576
Severity N/A
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-63890

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-63890, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under General Security Weakness. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

In the Linux kernel, the following vulnerability has been resolved: scsi: fcoe: Reject FIP descriptors with zero fip_dlen in CVL walker drivers/scsi/fcoe/fcoe_ctlr.c::fcoe_ctlr_recv_clr_vlink() advanced the descriptor cursor by an attacker-supplied fip_dlen without ever requiring dlen >= sizeof(struct fip_desc) in the default branch. The named descriptor cases (FIP_DT_MAC, FIP_DT_NAME, FIP_DT_VN_ID) checked their per-type minimum lengths, but a FIP_DT_NON_CRITICAL descriptor (fip_dtype >= 128, which the standard requires receivers to silently ignore) skipped that check entirely. An unauthenticated L2 peer on the FCoE control VLAN could hang fcoe_ctlr_recv_work on an fcoe, qedf, or bnx2fc initiator indefinitely by emitting one FIP CVL frame whose single descriptor had fip_dtype == FIP_DT_NON_CRITICAL and fip_dlen == 0: the cursor advanced zero bytes per iteration and the loop condition rlen >= sizeof(*desc) stayed true forever, blocking every subsequent FIP frame on that controller. Tighten the outer dlen guard to also reject dlen < sizeof(struct fip_desc), so a malformed descriptor whose length cannot even cover the descriptor header is rejected before the switch. This is the same lower-bound the named cases already apply and is the minimum scope that closes the loop.

References

NVD — CVE-2026-63890 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-63890
git.kernel.org/stable/c/0e3c6e5a8f... WEB
https://git.kernel.org/stable/c/0e3c6e5a8fc15a74dfb1e0c1df9f1da73600a81a
git.kernel.org/stable/c/14dd80a20a... WEB
https://git.kernel.org/stable/c/14dd80a20a72ce334adcc2d67402360527065948
git.kernel.org/stable/c/549859a113... WEB
https://git.kernel.org/stable/c/549859a1131052b07dff11a448e9f3221a40f260
git.kernel.org/stable/c/80a0cd3072... WEB
https://git.kernel.org/stable/c/80a0cd307205236ca28aa49bc553f58edcb9bf3a
git.kernel.org/stable/c/9eed1bd599... WEB
https://git.kernel.org/stable/c/9eed1bd59937e6828b00d2f2dfef631d964f3636
git.kernel.org/stable/c/d179949d21... WEB
https://git.kernel.org/stable/c/d179949d2175d2857d1c3a275a22bea58bcc5d36
git.kernel.org/stable/c/d537d29d51... WEB
https://git.kernel.org/stable/c/d537d29d51c8b808469e5adacf3e5a0092700738
git.kernel.org/stable/c/fda976f739... WEB
https://git.kernel.org/stable/c/fda976f7390bb5d1e9b84ef11ebb17323038e0c6

Frequently Asked Questions

What is CVE-2026-63890?
CVE-2026-63890 is a security vulnerability in Software classified as a security vulnerability vulnerability under General Security Weakness.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-63890?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-63890?
CVE-2026-63890 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-63890?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-9x5h-mxx6-q576",
  "modified" : "2026-07-19T18:31:44Z",
  "published" : "2026-07-19T18:31:44Z",
  "aliases" : [ "CVE-2026-63890" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: fcoe: Reject FIP descriptors with zero fip_dlen in CVL walker\n\ndrivers/scsi/fcoe/fcoe_ctlr.c::fcoe_ctlr_recv_clr_vlink() advanced the\ndescriptor cursor by an attacker-supplied fip_dlen without ever\nrequiring dlen >= sizeof(struct fip_desc) in the default branch.  The\nnamed descriptor cases (FIP_DT_MAC, FIP_DT_NAME, FIP_DT_VN_ID) checked\ntheir per-type minimum lengths, but a FIP_DT_NON_CRITICAL descriptor\n(fip_dtype >= 128, which the standard requires receivers to silently\nignore) skipped that check entirely.\n\nAn unauthenticated L2 peer on the FCoE control VLAN could hang\nfcoe_ctlr_recv_work on an fcoe, qedf, or bnx2fc initiator indefinitely\nby emitting one FIP CVL frame whose single descriptor had fip_dtype ==\nFIP_DT_NON_CRITICAL and fip_dlen == 0: the cursor advanced zero bytes\nper iteration and the loop condition rlen >= sizeof(*desc) stayed true\nforever, blocking every subsequent FIP frame on that controller.\n\nTighten the outer dlen guard to also reject dlen < sizeof(struct\nfip_desc), so a malformed descriptor whose length cannot even cover the\ndescriptor header is rejected before the switch.  This is the same\nlower-bound the named cases already apply and is the minimum scope that\ncloses the loop.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-63890"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0e3c6e5a8fc15a74dfb1e0c1df9f1da73600a81a"
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d537d29d51c8b808469e5adacf3e5a0092700738"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/fda976f7390bb5d1e9b84ef11ebb17323038e0c6"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-19T16:17:06Z"
  }
}